forces and pressure Flashcards
1
Q
pressure
A
force per unit of area
2
Q
what is pressure measured in?
A
Pascals (Pa)
3
Q
fluid pressure
A
particles are able to move and collide with surfaces and other particles exerting a force on the object
4
Q
perpendicular force
A
component of the force which is at right angles to the surface its colliding with
5
Q
what factors effect pressure in liquid
A
- density of liquid
- surrounding molecules colliding
- weight of the water above
- GFS
6
Q
UPTRHUST
A
The pressure on the bottom of the object being greater than the pressure on the top of the object
- resultant force is upwards
7
Q
how does weigh of gas particles above an object affects its atmospheric pressure
A
the lower the object the more particle collisions will take place above the object meaning a huge weight pressing down
